How_________you_________(spend)your holidays?

后面那个空都是spend
前面那个：
did
will
can

how did you spend your holiday?
how are you spending your holiday?

did...spend
或者will...spend
因为原句中没有指明时态，所以两者都可以

问将来的情况：How will you spend your holidays?
问过去的情况：How did you spend your holidays?

How______do___you___spend______(spend)your holidays?

How did you spend your holidays?